William kingsland



(No Mdem W.'KINGSL'AND.

SECONDARY BATTERY.

Gau/H ,zy gwwkw N PETERS, Pham-Lithograph, wnhingqnvlc,

Darren Sterns Fermat Ormea,

IILLIAM KINGSLAND, OF GUNNERSBURY, COUNTY OF MIDDLESEX, ENGLAND.

SECON DARY BATTERY.

SIPECJIFICA'IION forming part of Letters Patent No. 397,650, datedFebruary 12, 1889.

Application filed June 4, 1888. Serial No. 275,944. (No model.) Patentedin England April 22, 1887, No. 5,867.

To all whom it may concern.'

Be it known that I, VILLIAM KINGSLAND, electrician, a subject of theQueen of Great Britain, residing at Gunnersbury, in the county ofMiddlesex, England, have invented certain new and useful Improvements inSec ondary Batteries, (for which a patent has been granted to me in thefollowing country: Great Britain, dated April 22, 1887, No. 5,867,) ofwhich the following is a specification.

My invention relates to that type of secondary battery which has for anegative element or anode a slab or plate consisting wholly or mainly ofactive material-such, for example, as an agglomerate of peroxide oflead-electrical contact with which is effected by means of someinoxidiy'able metal, preferably platinum-foil, and my object is tominimize the amount of platinum required and to use it to the bestadvantage.

The electrical contacts to which this invention relates are thosejoining the electrodes from cell to cell or with the mainworkingconductors of the apparatus; and in order that my invention maybe clearly understood and readily carried into eiectI will describe thesame with reference tothe accompanying drawings.

Figure l represents in perspective a portion of an-anode composed of aslab or plate of active material, and showing the contact arrangementaecording to my invention. Fig.

' 2 is a partial vertical transverse section; and

Fig'. 3 is a side elevation of same with the plate D removed, andshowing the bolt C in cross-section. Fig. 4t shows a similar form ofconnection in longitudinal and vertical cross section arranged accordingto my invention and as applied to two plates. Fig. 5 is a plan, and Fig.6 is a vertical section on the line X Y,

K Fig. 5, showing a different arrangement ot' Vode B for this purpose.

with these a washer or cover or backing, D, for the platinum on thatside which is not in contact with the anode, and this washer, cover, orbacking is composed of one or more small pieces or strips of the samematerial as the anode, cut to the required shape and size, so as tocover the platinum or contact-piece A, which is thus inclosed on eachside with active material.

In constructing a cell containing two or more anodes, B, I sometimes, asshown at Fie. S, clamp the anodes together in pairs, with the platinumbetween, so that one piece ot' platinum may serve as a contact for twoplates; or, when it is desirable to have a cath ode, B, on each side ofevery anode B, I employ the aforesaid strip or washer of activematerial, D, as is shown at Figs. 4, `5, and (5, for a backing for theplatinum, and I place the two anodes B B so that one strip of activematerial, D, may serve as a backing for the platinum contacts A on eachanode B; or I may employ two or more strips or washers of activematerial to form a backing for the platinum contacts, and also toseparate the anodes, so as to permit of a cathode being placed betweenthem. I may also include the cathode B in the above arrangement, and, asis shown at Fig. 7, clamp it between the two anodes B B, making use forthis purpose of the same nuts or bolts, O, which hold the anodes B B andtheir contacts A A to gether, suitable holes being made in the cath- Inthis case it will be necessary to employ a strip of some suit ableinsulating material, as at D D-such as ebonite, or, preferably,india-rubber or `asbestus-at those points where the cathode wouldotherwise be in contact with the active material of the backings. Inclamping the plates together I may also employ india-rub ber or asbestusin the form of a washer, as shown at C', Figs. 5 and 7, underneath theheads of the nuts or bolts; or they may be applied in place of theinsulating-strip D', in order to give a certain amount of elasticity tothe combination and to allow tor eXpansion and contraction of theplates.

I am aware that it has been proposed to employ platinum in theconstruction of sec- IOO ondary batteries. I lay no claim to the use ofplatinum per se; but by my invention I am able to utilize its valuablequalities in a special and economical manner, and it is the means WhichI employ for such purpose which forms the essential feature of myinvention.

I claiml. In secondary batteries, the anodes B and platinum-foilcontact-pieces A, in combination With the clamping Washers or Strips D,of similar material to the anode, and bolts and nuts C, as set forth.

2. The combination, With two or more anodes, B, and platinum-foilcontact-pieces A, of the distancing` Washers or strips D, of similarmaterial to the said anodes, and bolts and nuts C, as set forth.

3. The combination, with two or more anodes, B, cathode or cathodes Band platinumfoil contact-pieces A, of the distancng strips or pieces D,of the same material as the anodes B, insulating-Washers D', and nutsand bolts C, as set forth.

WILLIAM KINGSLAND.

Witnesses:

WALTER J. SKERTEN, G. W. WEsTLEY, Bolwh gf No. 17 Gracechurch Street,London,

